This has been a thing since (at least) 2019, as this article shows:

https://redarrowlogistics.com/international/dodging-tariffs-...

Excerpt:

> Put simply, transshipping is when a country ships product through a third country so that the product will look like it’s coming from the third country, thereby avoiding duties or tariffs. For example, one supplier, Settle Logistics, goes through Malaysia: a 4600 miles diversion compared with sending a container from China straight to the US.

> This is much more expensive: shipping via Malaysia costs $3,000 to $4,000 more per shipping container, at least $2,000 more than shipping direct. Those costs are still worth it in order to avoid tariffs.